Sole-edge trimmer



A Patented M`ay 16,1899.

E. F. MAXWELL.

SOLE EDGE TBIMMER.

(Application tiled Har. 12, 1898.)

2' Shaets-Shaet I.

(No Model.)

` 1H: Noams Farms co4, PHoTo-umo., wAsmNsTcN, o, c.

No. 625,II5. Patented Mayul, |899. yE. F. MAXWELL.

(Application led Har. 12, 1898.) (N0 Md| 2 sheets-snm 2.

UNITED STATES PATENT OFFICE.

EDVlN F. MAXWELL, OF WEST BRIDGEVVATER, MASSACHUSETTS.

SOLE-EDGE TRIIVIMER.

SPECIFICATION forming part of Letters Patent No. 62 5,115, dated May 16,1899.

' Application filed March 12, 1898. Serial No. 673,564. (No model.)

in Sole-Edge Trimmers, of which the following is a specification.

This invention has relation to machines or tools for trimming the edgesof the soles of boots and shoes; and it has for one-of its objects toprovide a device of the character specified which shall be soconstructed as to discharge the cuttings more readily than heretofore,and conscquentlypreserve the cutting edges.

Another object of the invention is to increase the adaptability andefficiency of the device by providing it with guards or meansforlimiting the depth of cut of the cutters; and a furtherobject istoprovde parts which 'may be readily removedfor grinding and replacedwhen worn down.

The invention consists in the novel features of construction andarrangement,which I shall now proceed to describe and claim.

Of the accompanying drawings, forming a part of this specification,Figure 1 represents a sideelevation of a sole-edge trimmer constructedin accordance with my invention. Fig. 2 represents a front or endVelevation thereof. Fig. 3 represents a section on line 3 3 of Fig. 2.Fig. 4 represents a section on 1ine4 4 of Fig. 2. Fig. 5 represents asection on line 5 6 of Fig. 3 looking in the direction of the arrow Fig.6 represents a section on the same line looking in the direction of thearrow y. Fig. 7 represents a front elevation of the trimmer with theshield and shield-support removed. Fig. 8 represents a perspective viewof the shield and shield-support. Fig. 9 represents a front elevation ofthe same. Fig. 10 represents a side elevation of the same. Fig. 11represents a front elevation of the cutter member. Fig. 12 represents aside elevation thereof. Fig. 13 represents a front elevation of thebottom-guard and its support. Fig. 14 represents a side elevationthereof. Fig. 15 represents a front elevation of the adjustableedge-guard. Fig. 16 represents a side elevation thereof.

The same reference characters indicate the same parts in all thefigures.

Referring to4 the drawings, a is the shaft or spindle ofthe trimmer, andb is asleeveadjustably secured on said spindle by means of a set-screw band formed at its outer end with a number 0f sections D252 of thebottomguard.

c is a shield-support secured to the end of the spindle a by means of ascrew c' and formed with apertures c2 c2 for the escape of the cuttings.

c3 is a shield screwed to the shield-support con the left-hand threadandprovided with holes c4104, with which a spanner may be engaged to secureor remove the shield.

dis the cutter member, formed as a spider, at the outer ends of whosearms are. the cutters d d', having cutting edges at 2 2. As shown in thefront views of this cutter member, its outer faces 3 3 are sloped towardthe center to give cutting clearance. The cutters d occupy the spacesbetween the sections b2 of the bottom-guard and are set to leave spaces4 4between their forward faces and the rear faces of the sections b2 forthe purpose of allowing the cuttings to pass inwardly toward the centerofthe trimmer. The apertures c2 in the shield-support are arranged toregister with the spaces 4, as shown in Fig. 5, so that the cuttings maypass through said spaces and apertures and escape in the direction ofthe arrows a'.

` e is a ring which slips loosely over the screwthreaded outer surfaceof the sleeve b. This ring is formed with a number of radial aperturesor recesses ec, in which are mounted horizontal forwardly-extendingplates e2 e2, which project through apertures bain the bot-- tom-guardand form an edge-guard for the cutters, as hereinafter explained. Theforward ends of these plates occupy a shallow groove c5 in the shieldc3, said shield abutting The plates e2 are arranged to` on and 0E byhand, and a peripheral retaining ring or band e7. fis a second millednut screwing on the threaded portion of the sleeve b and abuttingagainst the nut e6. This nut f operates to lock the nut e6, and alsoserves as a rear clamping member for the edge-guard. The front clampingmember, as beforestated, is the shield c3. The edge-guard may thereforebe adjusted forward and backward and j. secured in place by the twoclamping members.

The cutter member d is formed'with a sleeve which surrounds a red ucedportion of the spin-K dle d and is held between the shield-support c anda shoulder 5, formed by reducing the I end of said spindle. The sections5270i the bottom-guard may, by moving the sleeve bl longitudinally ofthe spindle toward or away j from the cutters d', be adjusted to exposea greater or :less portion of said cutters between the bottom-trimmingedges 6 and the edges 7 of said sections b2. (See Fig. 4L.) The depth ofthe cut made by the trimmer on the bottom of thesole is therebyregulated. This method of adjustment also affords `means'for placingwide or narrow cutters for different thicknesses of soles in thesamecutter-hcad and adjusting the bottom-guard to the bottom trimmingedges of the cutters. It will befnoted that the cutters d are recessedon their rear portions, as at 9, to admit the portions of the l'bottom-guard between the sections b2. These recesses 9 differ in widthfor the different widths of cutters. Thedepth of cut of `that portion 8of each i cutter which trims the vertical edge of vthe j sole isregulated by adjusting the plates e2, forming the edge-guard 'beforementioned, in or out in a radial direction, and thereby eX- posing agreater or less portion of the cutters. After continued use the cuttersof an edgetrimmer become dull "and it is necessary to grind them down.It will readily be seen that Vmy improved construction enables thevarious parts of the trimmer to be adjusted to take up this wear. As thecutter member becomes reduced in diameter'by grinding, it is necessaryalso to reduce the diameter of the shield e3. The removability of saidshield from its support allows this to be easily effected and alsopermits the shield to be replaced without replacing the entire support.Having thus explained the nature of my invention and described a way ofconstructing and using the same, although without having attempted toset forth all the forms in which it may be embodied or all the modes ofits use, I declare that what I claim is- 1. In a sole-edge trimmer, arotary cutter member having edge '-trimming portions 8, and a guardhaving portions adjustable radially toward and away from saidedge-trimming portions to vary the depth of cut thereof.

2. In a sole-edge trim mer, a series of cutters, and bottom and edgeguards occupying the spaces between said cutters and arranged so thatchannels are left between the cutters and the members of the guards forthe escape of cuttings inward toward the center of the trimmer. a

3. In a sole-edge trimmer, a series of cutters, bottom and edge guardsoccupying the spaces betweenthe cutters and arranged so that channelsare left between the cutters and the members of the guards, and ashield-support having a portionextending inside of the cutters, the saidportion being formed with apertures which register with the channels andconstitute therewith passages for the escape of cuttings inward towardthe center of the trimmer.

4. In a sole-edge trimmer, a series of cutters, and an edge-guardconsisting of a rear support or base, a series of plates .securedthereto and extending horizontally between the cutters, and means foradjusting said l plates radially on their support.

5. In a trimmer, a cutter member comprising the spider cl and theforwardly-projecting cutters d thereon, and the cupped shieldholder clocated inside of said cutters and formed with the peripheral aperturesc2 registeringwith the spaces betweensaid cutters.

6. In a sole-edge trimmer, a spindle, a shield removably secured tothelend of said spindle, a series of cutters, a guard having portionswhich extend 'horizontally between said cutters and abut against'theshield, and means for moving said guard horizontally of the spindle toclamp it against the shield.

In testimony whereof I have affixed my signature in presence of twoWitnesses.

`EDWIN F. MAXWELL.

Vitnesses:

C. F. BROWN, A. D. HARRISON.

IOO

